Index out of bound in extensionless file

What version of OpenRewrite are you using?

I am using Maven plugin v5.14.0

How are you running OpenRewrite?

I am using the Maven plugin, and my project is a single module project.

 mvn -U -X org.openrewrite.maven:rewrite-maven-plugin:run -D rewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-migrate-java:RELEASE -D rewrite.activeRecipes=
org.openrewrite.java.migrate.UpgradeToJava21

What is the full stack trace of any errors you encountered?

Error while visiting scripts\jenkins-promote\dev-tst\Jenkinsfile_promoteToTST: java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
  java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:100)
  java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:106)
  java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:302)
  java.base/java.util.Objects.checkIndex(Objects.java:385)
  java.base/java.util.ArrayList.get(ArrayList.java:427)
  org.openrewrite.java.JavaTemplate$Matcher.parameter(JavaTemplate.java:103)
  org.openrewrite.java.migrate.net.URLConstructorsToURIRecipes$URLSingleArgumentConstructorRecipe$1.visitExpression(URLConstructorsToURIRecipes.java:68)
  org.openrewrite.java.migrate.net.URLConstructorsToURIRecipes$URLSingleArgumentConstructorRecipe$1.visitExpression(URLConstructorsToURIRecipes.java:57)

Start by reproducing the Maven command against the extensionless Jenkinsfile path shown in the report. Read JavaTemplate.Matcher.parameter and URLConstructorsToURIRecipes.URLSingleArgumentConstructorRecipe around the reported lines to determine why an empty parameter list is indexed. Done means the recipe no longer raises IndexOutOfBoundsException for this input.